- Title
- Microporous carbon nitride (C₃N₅․̣₄) with tetrazine based molecular structure for efficient adsorption of CO₂ and water
- Creator
- Sathish, C. I.; Premkumar, S.; Chu, Xueze; Yu, Xiaojiang; Breese, Mark B. H.; Al-Abri, Mohammed; Al-Muhtaseb, Ala'a H.; Karakoti, Ajay; Yi, Jiabao; Vinu, Ajayan
- Relation
- ARC.FT100100970 http://purl.org/au-research/grants/arc/FT100100970
- Relation
- Angewandte Chemie (International Edition) Vol. 60, Issue 39, p. 21242-21249
- Publisher Link
- http://dx.doi.org/10.1002/anie.202108605
- Publisher
- Wiley-VCH Verlag GmbH & Co. KGaA
- Resource Type
- journal article
- Date
- 2021
- Description
- Mesoporous carbon nitrides with C₃N₅ and C₃N6 stoichiometries created a new momentum in the field of organic metal-free semiconductors owing to their unique band structures and high basicity. Here, we report on the preparation of a novel graphitic microporous carbon nitride with a tetrazine based chemical structure and the composition of C₃N₅․̣₄ using ultra-stable Y zeolite as the template and aminoguanidine hydrochloride, a high nitrogen-containing molecule, as the CN precursor. Spectroscopic characterization and density functional theory calculations reveal that the prepared material exhibits a new molecular structure, which comprises two tetrazines and one triazine rings in the unit cell and is thermodynamically stable. The resultant carbon nitride shows an outstanding surface area of 130.4 m² g⁻¹ and demonstrates excellent CO₂ adsorption per unit surface area of 47.54 μmol m⁻², which is due to the existence of abundant free NH₂ groups, basic sites and microporosity. The material also exhibits highly selective sensing over water molecules (151.1 mmol g⁻¹) and aliphatic hydrocarbons due to its unique microporous structure with a high amount of hydrophilic nitrogen moieties and recognizing ability towards small molecules.
- Subject
- carbon nitride; CO₂ adsorption; mesoporosity; microporosity; sensing
- Identifier
- http://hdl.handle.net/1959.13/1445104
- Identifier
- uon:42500
- Identifier
- ISSN:1433-7851
- Language
- eng
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